100% Polyester Microfiber Heated Mattress Pad W/3M Moisture Treatment. Our Beautyrest heated mattress pad contains Secure Comfort technology, which is designed to virtually eliminate Electromagnetic Field emissions. The soft flexible wires and quilted top ensure your comfort. The fitted skirt is designed to create a perfect fit and fits up to a 19" mattress. Our heated mattress pad is machine washable, with a 10 hour auto shut off, and 5 setting temperature control. Twin, Twin XL, and Full size have one controller, Queen, King , and Cal King size have 2 controllers. Includes manufacturer's 5-year warranty. Features: Eliminates electromagnetic field emissions Soft flexible wires Quilted top Fit mattresses up to 17" in height 10 hour auto shut off 5 temperature settings Machine washable Controller works with smart home outlets and automatic timers, 1 for Twin and full size, 2 for queen and king size Material: 100% Polyester Soft Brushed Microfiber with 3M Moisture Management Treatment Dimensions: Twin: 39 x 75 + 15", Twin XL: 39 x 80 + 15" Color: White Beautyrest Heated Microfiber Mattress Pad with 3M Scotchgard - Twin / Twin XL